Murmur (or Murmus or Murmux) is the Fifty-fourth Spirit; a Great Duke
and an Earl. He appears in the form of a warrior ridding a gryphon with
a Ducal crown upon his head. His ministers go before him with great trumpets
sounding. His office is to teach philosophy perfectly and to constrain souls
deceased to come before the Exorcist to answer those questions which he
may wish to put to them. He was partly of the Order of Thrones and partly
of the Order of Angels but now governs 30 Legions of Infernal Spirits.